#4039D3#4039D3

#4039D3 is a mid, highly saturated blue. Relative luminance 0.087; OKLCH L 46.5% C 0.225 H 275.2°. Best body text is #FFFFFF at 7.65:1 contrast (WCAG AA passes).

Color values

HEX	#4039D3
RGB	rgb(64, 57, 211)
HSL	hsl(243, 64%, 53%)
HSV	hsv(243, 73%, 83%)
CMYK	cmyk(69.7%, 73%, 0%, 17.3%)
CIE-LAB	lab(35.44, 50.47, -77.52)
CIE-LCH	lch(35.44, 92.51, 303.07°)
OKLab	oklab(46.5% 0.0202 -0.2241)
OKLCH	oklch(46.5% 0.225 275.2)
XYZ	xyz(15.3315, 8.7179, 62.4901)
Luminance	0.0872 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blurple

#5539CC

ΔE00 2.54

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4039D3 #CCD339

analogous

#397FD3 #4039D3 #8D39D3

triadic

#4039D3 #D34039 #39D340

tetradic

#4039D3 #D3397F #CCD339 #39D38D

square

#4039D3 #D3397F #CCD339 #39D38D

split-complementary

#4039D3 #D38D39 #7FD339

monochromatic

#1F1A77 #2C26A9 #4039D3 #706BDE #A19DE9

Accessibility & contrast

On white

7.65

#4039D3 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.74

#4039D3 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #4039D3

7.65:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4039D3	#FFFFFF	#000000	##FFFFFF
##4039D3	1.00	7.65	2.74	7.65
#FFFFFF	7.65	1.00	21.00	1.00
#000000	2.74	21.00	1.00	21.00
##FFFFFF	7.65	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005AD8

Deuteranopia (green-blind)

#004CD0

Tritanopia (blue-blind)

#006583

Achromatopsia (no color)

#535353

Design tokens & code

CSS

--color: #4039d3;
/* rgb */ color: rgb(64, 57, 211);
/* oklch */ color: oklch(46.5% 0.225 275.2);

Tailwind

colors: {
  custom: {
    50: '#8971e2',
    500: '#4039d3',
    950: '#000000',
  },
}

SCSS

$custom: #4039d3;
$custom-light: #8971e2;
$custom-dark: #000000;

JSON

{
  "hex": "#4039d3",
  "rgb": {
    "r": 64,
    "g": 57,
    "b": 211
  },
  "hsl": {
    "h": 242.727,
    "s": 63.636,
    "l": 52.549
  },
  "oklch": {
    "l": 0.46503,
    "c": 0.22504,
    "h": 275.2
  },
  "luminance": 0.08719
}

Semantic roles & 50–950 ramp

primary

#4039D3

secondary

#D2D592

accent

#E741DF

background

#F9F7FE

surface

#F2EDFC

border

#CCC8D5

text

#0D0816

muted

#7E7B84

Preview Lab

Preview with #4039D3

Body copy rendered with the generated semantic roles for this colour.

Preview Lab → · Contrast checker → · Palette generator →